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D. U. PEUK 86 P. L. GAYLORD.

MIRROR PIVOT.

No. 299,005. Patented May 20 mm Washington. a t.

UNITED 'ra rns DON C. PECK AND FREDERICK L. GAYLORD, OF ANSONIA,CONNECTICUT.

MIRROR-PIVOT.

SPECIFICATION forming part of Letters Patent No. 299,005, dated May 20,1884.

Application filed February 2.3, 188-1.

To all whom, it may concern.-

Be it known that we, DON C. PECK and FREDERICK L. GAYLORD, of Ansonia,in the county of New Haven and State of Connecticut, have invented newImprovements in Mirror-Pivots; and we do hereby declare the fol: lowing,when taken in' connection with ac companying drawings and the letters ofreference marked thereon, to be a full, clear, and exact description ofthe same, and which said drawings constitute part of this specification,and-represent, in-

Figure l, aperspective view of the partsdetached; Fig. 2, a sectionalview as attached to a mirror; Figs. 3, 4, 5, and 6, modifications.

This invention relates to an improvement in pivots for hanging mirrorsand for like purposcssuch as transoms, &c.-s0 that. they may be held atany desirable inclination; the object being to make the pivots so thatthefriction can be readily increased or diminished, according to theweight of the mirror to be hung, and also that the mirror maybe readilyremoved or introduced; and it consists in the construction ashereinafterdescribed, and particularly recited in the claims.

A represents a cup-shaped metal socket; B, a thin rubber or flexiblematerial or spring disk, in shape corresponding to, but less in depththan, the recess in the socket, so as to fit closely therein; C, a metaldisk, in shape also corresponding to the recess in the socket, but so asto revolve freely therein, the said disk constructed with adovetail-shaped groove, 0, diametrically across its face; D, a platehaving a dovetail shaped rib, cl, on its surface corresponding to thegroove in the disk C, as seen in Fig. 1, the rib constructed with ashoulder, F, on its face near one end.

To attach the pivot, bore ahole in each post or support G at the pointit is desired to place the pivot, the diameter being just sufficient toadmit the socket A. Set asoeket into each hole, placea disk, 13, thenadisk, C, into each socket, the groove outward. Then introduce a screw,E, through the opening in the center of the disks and socket and driveit into the posts until the disks B and C and socket A are drawntogether to cause sufficient friction upon the disk C to hold the mirrorat any desired inclination. A plate, D, is attached to each side themirr0r-frame at a point correspond- (No model.)

ing to the socket. To introduce the mirror, set the rib d on the platesD into the groove 0 in the disks C until the shoulder F comes to abearing on the disk C, as seen in Fig. 2. The disks 0, being nowconnected to the plates D, act as trunnions, upon which the mirrorturns, as seen in Fig. 2. After time and wear, or whenever the frictionis not sufficient to hold the mirror, it may be increased by simplyturning the screw into the post, or vice versa, to diminish thefriction.

The elastic or flexible disk B may be dis pensed with, the surface ofthe disk C being then drawn by the screw E against the bottom of thesocket, to cause sufficient friction for f holding the mirror, as seenin Fig. 3.

- In order to prevent the socket A from turning in the post in which itis placed, we form one or more projections, I, on the back of thesocket, which enter the post and'prevent any rotation of the socket.

This pivot may be made-very cheaply, the parts A, C, and D being madefrom cast metal, E, an ordinary woodserew, and the disk B, if used, cutfrom sheet-rubber or other suitable material, and all can be readily puttogether and secured to their respective parts.

Instead of making the recess in the socket of an equal diameterthroughout, as shown, it may be conical, as seen in Fig. 4, and the diskC of corresponding shape, the conical surfaces increasing the frictionas their parts are drawn together.

Instead of making the friction-spring a disk of india-rubber, it may bein tubular shape, the disk C constructed with a tapering shank to enterthe tube, as seen in Fig. 6, and so that as the disk C is forced inwardit will expand the tube and increase the friction.

In some cases it is desirable to attach the pivot to the back of thepost and frame. In that case the socket is provided with a flange, L,and the plate D with a corresponding flange, M, as seen in Fig. 5, Inthis construction, instead of the adjusting screw being driven into thewood of the frame or post, the socket is concentrically drilled andtapped to receive the screw, as seen in Fig. 5.

We claim- 1. The combination of the metal socket A, disk C, having adovetail-shaped groove, a, di ametrically across its face, with screw E,and

plate D, having a d0vetai1-shapedrib,d, on its (1, on its facecorresponding to the. groove 0,

face corresponding to the groove a, substan- -substantiailyias and forEthe purposespecified. tially as and for the purpose specified.

2. The combination of the metal socket A, DON O. PEGK. 5 disk 0, havinga dovetail-shaped groove, 0, di- FREDK. L. GAYLORD.

ametrically across its face, and a spring-disk, Witnesses: B, betweenthe socket Aand disk 0, withscrew IOHAS. F. KUOH,

E, and plate D, having a dovetail-shaped rib, W. O. BARCLAY.

